DEFINITION SYSTEM AND ANALYSIS SYSTEM

1. DEFINISI SISTEM

The system is a set of elements / elements interrelated and affect each other in joint activities to achieve a goal.
Example:

1. Computer System consists of Software, Hardware, and brainware
2. Accounting System
   

According to LUDWIG VON BARTALANFY
The system is a set of elements that are held together in a inter-relationships between these elements with the environment.

According to ANATOL RAPOROT
The system is a collection of unity and connection devices one another.

According to L. ACKOF
The system is any entity in a conceptual or physical consists of the parts in a state of interdependence another.

System requirements:

1. The system should be established to solve the problem.
2. Elements of the system must have a defined plan.
3. The relationship between elements of the system.
4. The basic elements of the process (the flow of information, energy and material) more important element of the system.
5. Organizational goals more important than the destination element.
   

In general, the system can be divided into 2:

1. PHYSICAL SYSTEMS (PHYSICAL SYSTEM):
Collection of elements / elements which interact with each other each other physically and can be identified by tangible goals.
Example:
- Transportation systems, elements: personnel, machines, organizations running transport
- Computer Systems, elements: equipment functioning bersamasama to perform data processing.


2. SYSTEM ABSTRACT (ABSTRACT SYSTEM):
The system formed by the implementation of the dependency ideas, and can not be identified for real, but it can elements described.
Example:
Theology systems, the relationship between man and God.

2. SYSTEM CHARACTERISTICS

1. Organization
Includes organizational structure and function, Organizations will not run without the function of each part and sub-sections.
Example:
- The function of chief executive.
Take full responsibility for death or life company lead.
- The function of marketing department.
Fully responsible for the smooth product manufacturing by the way buyers look for subscriptions.
- The function of finance and administration department.
Responsible for the smooth running of financial expenditure company.


2. Interaction

Mutual connectedness between parts of one another.
Example:
SA to P with ED and vice versa.
SA: Systems Analyst, P: Programmer, DE: Data entry.


3. Interdependence

Part one has a dependency with the another.
Example:
Interdependent marketing division with the production and finance and administration in terms of billing customer.


4. Integration

An integration of subsystem-subsystem to achieve purpose.
Example:
Marketing division received 100 orders a car but only able to provide 50 units. To deal with this issue held cooperation with other companies engaged in the field of same.


5. Main objection

The centrality of the same goals of each subsystem.
Example: a company requires convergence goals.

3. CLASSIFICATION SYSTEM

1. Deterministic System

System where the operations (input / output) that occurs therein can be determined / known with certainty.
Example:
- Computer programs, carry out appropriately in accordance with the series of instructions.
- Payroll System.


2. Probabilistic System

System input and the process can be defined, but the output produced can not be determined with certainty; (Always There bit errors / deviations to the forecast path
system).
Example:
- System test assessment
- Marketing system.


3. Open System

Systems that have an exchange of energy, material or information with the environment. These systems tend to adaptation, can adjust to the environment that can continue its existence.
Example:
Organizational systems capable of adaptation. (Business in face competition from a changing market. Companies can not be removed to adjust).


4. Closed System

Physical system in which the process is not experiencing exchange of matter, energy or information with outside environment system.
Examples: chemical reactions in the tube insulated and sealed.


5. Relatively Closed System
6. 
   Closed system but did not close at all to receive other influences. This system can accept in its operations to outside influences already defined within certain limits.
   Example:
   Computer systems. (This system only accepts input predetermined, process it and provide output is also predetermined. no affected by the turmoil outside the system).
   
   
7. Artifical System

Systems that mimic the natural events. This system formed based on the incident in which human nature can not do. In other words, artificial in nature.
Example:
- AI system, the computer program capable of making computer as if thinking.
- Robotics system.
- Network neutral network.


8. Natural System

The system formed from events in nature.
Example: sea, beach, the atmosphere, solar system, etc..


9. Manned System

System behavior description that includes participation humans.
This system can be described in ways as follows:
H.1. Humans the system.
System that emphasizes human relations.
H.2. Man-machine systems.
Systems that include engines for a purpose.
H.3. Machinery systems.
The automated system in which humans have a duty to begin and end the system, while it man involved also to monitor the system.
Machines interact with the machine to do some activities. This makes getting Pengotomatisan the importance of the concept of organization, in which men freed
from routine tasks or tasks strenuous.
System designers more often used method of "Relatively Closed and deterministic system ", because this system in the process easier to predict the results will be obtained and more easily regulated and supervised.
Example:
In the area of information systems, computer and program factors computers are usually "Relatively Closed and deterministic", but human factor as the management is "Open and probabilistic System ".

B. ANALITYC SISTEM.
a method that tries to see the whole relationship kesistematisan investigate the problem for the purpose of the system ineffective selection and evaluation in the form of lack effectiveness and costs.
In this method several steps are given as below:
a. Determining the identity of the system.

1. What system is applied
2. Limit
3. What is the system implemented
   

b. Determining the purpose of the system.

1. The output of the contents of the system
2. Functions and objectives required to try to cope environment
3. The parts of what is contained in the system and what purpose of each section.
4. The purpose of each part of the system should be clear.
5. What means are used to connect subsystem with other subsystems
   

d. How the parts are there in each other's system connected into a single unit.

4. DEFINITIONS ANALYSIS SYSTEM
A system will be designed by one person or group of people who form a team. The person who designed this system is called Systems analyst.

There is a System Analyst defines as:

1. a person who uses a computer application knowledge had to solve business problems, under System Manager's instructions.
2. a person who is responsible for translating kebutuhankebutuhan The system user (the user) into the technical specifications required by the programmer and upervised by the Management.
   

5. ANALIS SYSTEM FUNCTIONS
Function Analysis System is :

1. Identifying the problems of the user
2. Specifically stated objectives to be achieved for user needs
3. Choosing an alternative - an alternative method of solving the problem
4. Plan and implement appropriate system design user demand.
   

Read more...Analisis Transaccional (Coleccion Esenciales) (Spanish Edition)